Steam-generator for motor-cars.



H. A. TURNBULL & A. GOD-ING. STEAM GENERATOR FOR MOTOR CARS. APPLICATION FILED SEPT. 30. 1908.

2 SHBETQ-SHEET 1.

xlglm 25 25 Patented May 11, 1909.

H. A" TURNBULL & A GODING.

STEAM GENERATOR FOR MOTOR CARS APPLIOATION FILED SEPT. 30. 1908.

Patented May 11, 1909;;

2 SHEETS-SBBET 2.

, part sectional plan of Fig. 4.

UNITED STATES PATENT OFFICE.

HENRY ALEXANDER TURNBULL AND ALFRED. eonnvc, or SURREY HILLS, VICTORIA, AUSTRALIA.

STEAM-GENERATOR FOR MOTOBx-CARS.

Specification of Letters Patent.

Application filed September 30, 1908.

Patented May 11, 1909.

Serial No. 455,566.

To all whom it may concern: I

Be it known that we, HENRY ALEXANDER TURNBULL and Anrnno GomNo, subjects of the King of Great Britain, residing at Newton street, Surrey Hills, and Pembroke street, Surrey Hills, respectively, in the State of Victoria, Australia, have invented certain new and useful Improvements in Steam- Generators for Motor-Cars and other Purerator is small, compact and of simpleconstruction and is so arranged that the supply of vapor fuel will be automatically regulated by the heat of the generator.

In order that our invention may be the more easily understood reference may be made to the accompanying drawings, in which Figure 1 is a cross sectional elevation of a generator embodying our invention. Fig. 2 1s a plan of same with part of top cover removed. Fig. 3 is a section on the line aa of Fig. '1. Fig. 4. is an elevation of the fuel controlling mechanism. Fig. 5 is a Fig. 6 is an elevation of a modified form of valve, whileFig. 7 is a section on the line bb of Fig. 6: Figs. 4 to 7 are drawn to a larger scale than the. other figures.

In constructing a generator embodying our invention we form an outer, shell of thin sheet metal outer and'inner cylinders l and 2 the space between same being filled with asbestos or other suitable non-conduct ing media 3. The shell is covered at the top with circular plates 4 and 5 also having as bestos 3 between them and covered at the bottom as will be hereinafter described. The top cover has a chimney or-leadaway duct 6 for the outlet of the. products of combustion from the interior of the generator.

We will now refer to that portion of the generator where the fluid enters as water and leaves as super-heated high pressure steam. A tube 7 enters preferably from below the top plate or cover of the generator and passes to about the center of the latter where it enters a vertical box 8 in which is set a valve 9 governed by a'spring 10, the top of said box being provided with a screw cap 11 for examination purposes and to form a guide for the spindle 12 of the valve. The valve 9 is capable of being moved from its seatby the pressure of the water from the engine pump, the water being projected in a shower or spray into a depending spray cylinder 13, the latter projecting downwardly for some distance in order to be close to the heat from the burner to be hereinafter generator, so that it is kept staunchly in po-' sition, and is provided at its bottom with a screw cap 16 from the center of which is a boss 17 pointing downward and having therein a female thread for the reception of a male threaded steel bar 18 which latter projecting downwardly freeiy'through the center of the burner to a crank to be hereinafter described. This cylinder 13 is constructed of copper or other suitable metal and forms the thermostat which by elongation owing to expansionby heat will operate mechanism toturn off the vapor fuel as will be hereinafter explained.

The spray cylinder 13 contains an inner pipe 19, having its intake as close as practicable to the bottom of the cylinder, through which the vaporized water in the interior of the cylinder will proceed into the top ring or coil of a series of coils of metal piping 20, through the sinuous courseof which latter the said vapor will travel becoming drier in such travel. When the steam reaches the termination of a coil of the series it ascends into a connecting pipe 21 having a connection 22 and proceeds into another lower coil 1 exactly corresponding with the one above it. in the drawing nine of such coils are shown i and it will be noted that when the steam E has passed through the hole length of these superimposed coils it will have, in its travel, become nearer and nearer to the burner 33 1 and 34 where the greatest heat is and have thus become superheated in the final or bot tom coils from whence it is'led away by a pipe 24 (see Fig. 2) through the outer shell of the generator to the engine for power purposes. The tubes of the super-imposed convolutions are of copper or other suitable 1 metal and-are kept in place or supported by bunsen.

depending metal frames orbrack ets 38 held by bolts 39, which also support the plate 15 before mentioned on which the cylinder 13'is mounted. Allowance is made for the ex pansion and contraction due to the raising and lowering of the heat in the generator chamben,

Reverting to the hydrocarbon liquid fuel the same enters by a pipe 25 governed b a tap 25 into the interior of the furnace Where such pipe takes one or more and then proceeds down through and below the bottom of the generator into the open. Here the pipe 25 screws into the nozzle block 28 in which is screwed the nozzle jet 29 of a trolling value which will be hereinafter de scribed.

30 is the vapor and air bunsen mixing tube from which air and vapor are led by the connections 31 and 32 into a circular receiving box 33 from whence the mixture will be distributed by radiating tubes 3i having perforations 35 for the escape of the combustible gas into the furnace or from perforations or incisions 36 in the circular pan or box In order to provide the heat necessary for vaporizing the liquid fuel passing through the convolutions 27 in the first instance we provide a tray or pan 87 beneath such convolutions inwhich may be placed asbestos or other non-combustible. media (not shown) said tray receiving a little methylated spirits or other suitable combustible liquid. he generator is provided with a door 23 near the convolutions 27 to allow of inspection of the generator and insertion and lighting of material in the pan or tray'37.

- Beneath the burner is arranged a plate 40 (Figs. 1 and 3) having perforations 41 preferably directly under the radiating tubes 34 for the supply of air to the burner. Beneath this are a sheet of gauze 42 and a perforated plate 43 under which latter is a ring 44. The top and bottom covers are held to the outer shell of the generator by bolts 45 and plates l6 and 47. The burner 1S held in position by a plate 48 on the connection 32 which rests on pieces 49 secured to the plates 47 by screws 50.

51 indicates part of an angle iren frame to which the generator is held by nuts 52.

Referring now to the valve controlling mechanism the rod 18 passes down through the top of the box 33 and is connected with an arm 53 of a spindle 54 (Figs. 1, 4 and 5).

The spindle bears in the connection 31 and its projecting end has a lever 55 secured to it. 56 is a rod copnecting the lever 55 with a lever 57 on a spindle 58 mounted in'the block 28, an arm 59 from which spindle operates a needle valve 60. The valve may be kept open by a spring 61 and backed by a regulating screw 62, and the lever 57 may convolutions 27 The nozzle block contains a conpit understood that by 1 be operated by the rod 56 through the medium of the block 63 and screw 64-, the lever having a pin 65 passing through the block 53 and one of the perforations 66 inthe lever.

In the operation of the generator the cylinder 13 expands by heat and moves the rod 18 downward operating the lever 57 and valve- 60,'through the levers-53 and 55 and the rod 56, and regulating the supply of vapor to the burner. The play between the block 63 and the lever 57 is adjusted so that the valve will'not be temperature has reached a point above which it has been decided not to heat the generator.

closed until the leferring to the cylinder 13, the opening of In Figs. 6and 7 a modified form of valve is shown in which a sector plate 67 is employed'to cut off the vapor instead of the needle valve before described. Alternatively, or in addition to the said tray or pan 37 for heating the convolutions 27 we may employ a pilot burner the latter being fed from either the main liquid fuel supply or an independent supply. Vi e would have hydrocarbon liquid fuel we mean those, gas producing fluidsknown as petroleum, benzin, kerosene,'petrol, gasolene, naphtha and the like.

We claim 1. A steam generator comprising a thermostatic chamber, generator tubes communieating therewith, a fuel controlling valve.

1 and operating connections between the cham- 1 her and the valve, the said chamber receiv- 1 ing the water in the first instance and deliveriug moist steam or vapor to the generator tubes, substantially as and for the pur- I poses set forth. 1 2. A steam generator comprising generator tubes, vertical thermostatic chamber ,communi 'ating therewith, ling valve, and a downwardly depending a fuel controlrod and levers cotiperating with the cham- 4 her and valve to regulate or govern the temperature in the generator by the expansion and contraction of said chamber, the said chamber receiving the water in the first instance and delivering such fluid in the form of moist steamor vapor to the generator tubes, substantially as and for the purposes set forth. I

3. A steam generator comprising an outer shell, a distributing box, a water'valve set fuel supply is controlled described.

therein, an expanding cylinder, an outlet by the operation of the'expanding cylinder, substantially astrolling the vaporized fuel supply comprising an expanding cylinder which receives Water and delivers steam, a needle valve 60, a spring 61, an adjusting screw 62 and levers and connections between the expanding cylinder and the needle valve substantially as and for the purposes set forth.

5. In steam generators :means for controlling the vaporized fuel supply comp ising an expanding cylinder which receives water and delivers steam, a needle valve 60, a spring 61, an adjusting screw 62, a block (53 having a screw 6%, a lever 57 with perforations 66 and pin 65, and levers and con- 15 nections between the expanding cylinder and the needle valve substantially as and for the purposes set forth.

In testimony whereof we have signed our names to this specification in the presence of 20 two subscribing Witnesses. I

HENRY ALEXANDER TURNBULL. ALFRED GODING. Witnesses:

EMILY TURNBULL, ALICE HARKER. 

